Blueberry skins stain the spoon beside a ribbon of amber caramel; the pairing is smarter than it looks. Sweetness needs opposition. A small dose of acid or bitterness restrains perceived sugar, so fruit aroma and cooked-sugar notes arrive before sucrose flattens the palate.The palate is easily bored. Taste receptor signaling does not behave like a ledger: sweet, sour, and bitter inputs converge in...More